Yes, and it's rather annoying!
When using other non official apps you can see that the sensor is still providing readings during these periods.
When viewing the raw data, you can see that the sensor does occasionally glitch and give a single completely off reading (maybe due to the filament shifting in the skin?), and it seems that for LibreLink whenever it detects a change between subsequent readings above some threshold, or a sudden change in direction, it just stops providing any readings at all to the user for a while, to avoid them making decisions based on erroneous information.
The problem with this approach is that sometimes these rapid changes are *not* glitches, but real blood sugar changes, and it's at these times that readings can become especially useful in eg knowing when to stop treating a hypo after it's turned around.
If using another app it's usually fairly obvious when a reading is a glitch, but Abbott don't trust us to be able to tell the difference.
I feel the same way about the extrapolation it does - it's dumbed down in a bad way that actually makes it significantly worse. Instead of trusting users to understand there's a delay between real blood values and the sensor values from interstitial fluid, it extrapolates forward to guess the true value 'now', but without showing what part is extrapolated.
